CN207761941U - A kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering - Google Patents
A kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering Download PDFInfo
- Publication number
- CN207761941U CN207761941U CN201820082811.4U CN201820082811U CN207761941U CN 207761941 U CN207761941 U CN 207761941U CN 201820082811 U CN201820082811 U CN 201820082811U CN 207761941 U CN207761941 U CN 207761941U
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- China
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- oil
- chambers
- safety valve
- hole
- guiding valve
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- Withdrawn - After Issue
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- Details And Applications Of Rotary Liquid Pumps (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
The utility model discloses a kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering, including rear cover and the pump housing, safety valve complement, oil distribution casing and high pressure cargo tank are equipped in the pump housing, the front end of safety valve complement is the guiding valve ante-chamber equipped with oil-through hole C and damping hole, the rear end of safety valve complement is the guiding valve back cavity equipped with oil-through hole D, and guiding valve resetting spring is connected between the rear end and the pump housing of safety valve complement；Space between stator on oil distribution casing and variable ring is B chambers and C chambers, and wherein B chambers are connected with guiding valve ante-chamber, and C chambers are connected with guiding valve back cavity；High pressure cargo tank is equipped with A chambers, and the side of A chambers is connected with guiding valve ante-chamber, and the other side is connected with C chambers.The utility model is designed reasonably, it is simple in structure, it is at low cost, can be by load flow automatic regulation, can be according to automobile driving speed flow automatic regulation on the automobile, flow is big when making low speed, turns to light；Flow is small when high speed, and steering wheel is not unstable, and intact stability is good.It is recycled inside hydraulic steering pump moreover, fluid can be reduced, reduces fluid fever and energy expenditure, while engine power consumption can be reduced, good energy-conserving effect can be promoted the use of.
Description
Technical field
The invention belongs to hydraulic pressure pump technical fields, and in particular to a kind of limited pressure internal feedback energy-saving hydraulic power steering
Pump.
Background technology
Steering hydraulic boost pump is a crucial dynamical element of automobile steering system, and effect is carried for steering
For power, mitigate labor intensity when driver turns to.
There are oil inlet (inlet port) and oil outlet (press oil port) oil inlet to pass through oil pipe and fuel tank on steering hydraulic boost pump
Connection.Oil outlet is connect by oil pipe with turning machine.There are rotor, pump shaft and belt pulley on steering blade pump.Engine crankshaft
Belt pulley imparts power to steering pump pulley by belt.Belt pulley imparts power to pump shaft.Pump shaft will by spline
Power passes to rotor.Rotor rotation makes the hydraulic oil sucked from fuel tank generate certain pressure output to turning to by compression
Machine.There are the force-transmitting parts such as oil cylinder, pull rod in turning machine.Before pressure oil pushes oil cylinder to push automobile using a series of force transmission mechanisms
Wheel rotation achievees the purpose that help to turn to.Most of existing steering hydraulic boost pump is constant displacement pump, the disadvantage is that fluid is easily sent out
Heat, energy loss are big.
Invention content
The purpose of the present invention is to provide a kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering, to solve the above-mentioned back of the body
The problem of proposed in scape technology.
To achieve the above object, the present invention provides following technical scheme：A kind of limited pressure internal feedback energy-saving hydraulic steering
Boost pump, including rear cover and the pump housing, structural feature are：Rear cover is equipped with oil inlet, oil-through hole A and oil-through hole B；It is set in the pump housing
There are safety valve complement, oil distribution casing and high pressure cargo tank, the front end of safety valve complement is before the guiding valve equipped with oil-through hole C and damping hole
The rear end of chamber, safety valve complement is the guiding valve back cavity equipped with oil-through hole D, and is connected between the rear end and the pump housing of safety valve complement
Guiding valve resetting spring；Oil distribution casing is equipped with variable ring, stator, rotor and several blades, and the wherein surface of oil distribution casing is equipped with oil suction
Window, pressure oil window and throttle orifice, variable ring is interior to be equipped with the elongated slot with quad seal item, and variable ring passes through positioning pin and stator turns
Dynamic connection, and the space between stator and variable ring is divided into B chambers and C chambers by quad seal item and positioning pin, wherein B chambers pass through
Oil-through hole A, oil-through hole B and oil-through hole C are connected with guiding valve ante-chamber, and C chambers are connected by oil-through hole D with guiding valve back cavity, rotor
It is rotatably set to stator interior by pump shaft, and blade is slidably disposed in rotor；High pressure cargo tank is equipped with A chambers, A chambers
Side is connected by oil-through hole E and damping hole with guiding valve ante-chamber, and the other side is connected by throttle orifice with C chambers, and high pressure oil
The side in cabin is equipped with oil outlet.
Preferably, safety valve complement includes guiding valve and safety valve, the side of guiding valve is the cavity with opening, safety valve
It being movably arranged in cavity, the head end of safety valve passes sequentially through steel ball, support nail and safety valve spring and is flexibly connected with cavity,
The tail end of safety valve is equipped with safety valve adjusting nut, and the wherein diameter of safety valve adjusting nut is more than the diameter of cavity, and safety
Pressure adjusting pad piece is equipped between valve regulation nut and guiding valve.
Preferably, stator is arranged with rotor eccentricity, and stator reset is connected between the side of stator and variable ring
Spring.
Preferably, the quantity of blade is 11.
Preferably, being equipped with circular seal item in quad seal item.
Preferably, the pressure value of A chambers is P1, the pressure values of B chambers is P1, and the pressure values of C chambers is P2, and P1 and P2
Value differs.
Compared with prior art, reasonable design of the present invention, it is simple in structure, it is at low cost, it can automatically adjust and flow by load
Amount, can be according to automobile driving speed flow automatic regulation on the automobile, and flow is big when making low speed, turns to light；It is flowed when high speed
Measure small, steering wheel is not unstable, and intact stability is good.It is recycled inside hydraulic steering pump moreover, fluid can be reduced, reduces oil
Liquid generates heat and energy expenditure, while can reduce engine power consumption, and good energy-conserving effect can be promoted the use of.
Description of the drawings
Fig. 1 is the structural schematic diagram of rear cover of the present invention；
Fig. 2 is the A-A structural schematic diagrams of Fig. 1；
Fig. 3 is the B-B structural schematic diagrams of Fig. 1；
Fig. 4 is the structural schematic diagram of oil distribution casing of the present invention；
Fig. 5 is the operation principle schematic diagram of the present invention；
Fig. 6 is the close-up schematic view of the parts I in Fig. 5；
Fig. 7 is the operation principle schematic diagram of rotor of the present invention；
Fig. 8 is the structural schematic diagram of guiding valve of the present invention；
In figure：1- oil inlets, 2- oil-through holes A, 3- oil-through hole B, 4- oil distribution casing, 6- support nails, 7- guiding valves, 8- oil-through hole C,
9- damping holes, 10- guiding valve ante-chambers, 11- oil-through holes D, 12- guiding valve back cavity, 13- variable rings, 14- stators, 15- rotors, 16- leaves
Piece, 17- oil sucking windows, 18- pressure oil windows, 19- throttle orifices, 20- quad seal items, 21- elongated slots, 22- positioning pins, 23-B chambers,
24-C chambers, 25- pump shafts, 26- high pressure cargo tanks, 27-A chambers, 28- oil-through holes E, 29- oil outlet, 30- guiding valve resetting springs, 31- peaces
Full valve spring, 32- safety valves, 33- stator resetting springs, 34- circular seal items, 35- oil suctions area, the laminated oil zones 36-, 37- steel balls,
38- valve seat orifices, 39- safety valve adjusting nuts, 40- pressure adjusting pad pieces.
Specific implementation mode
Explanation that the present invention will be further explained below in conjunction with the accompanying drawings, but do not limit the scope of the invention.
In the description of the present invention, it should be noted that the instructions such as term "upper", "lower", "left", "right", "inner", "outside"
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, does not indicate or imply the indicated device or element must have a particular orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.
- 8 are please referred to Fig.1, the present invention provides a kind of technical solution, a kind of limited pressure internal feedback energy-saving hydraulic power steering
Pump, including rear cover and the pump housing, the rear cover are equipped with oil inlet 1, oil-through hole A2 and oil-through hole B3；Peace is equipped in the pump housing
The front end of full valve assembly, oil distribution casing 4 and high pressure cargo tank 26, safety valve complement, the safety valve complement is equipped with oil-through hole C8
Rear end with the guiding valve ante-chamber 10 of damping hole 9, safety valve complement is the guiding valve back cavity 12 equipped with oil-through hole D11, and safety valve is total
At rear end and the pump housing between be connected with guiding valve resetting spring 30；Oil distribution casing 4, the oil distribution casing 4 are equipped with variable ring 13, determine
Son 14, rotor 15 and several blades 16, the wherein surface of oil distribution casing 4 are equipped with oil sucking window 17, pressure oil window 18 and throttle orifice 19,
The elongated slot 21 with quad seal item 20 is equipped in variable ring 13, variable ring 13 is rotatablely connected by positioning pin 22 and stator 14, and
Space between stator 14 and variable ring 13 is divided into B chambers 23 and C chambers 24, wherein B chambers by quad seal item 20 and positioning pin 22
23 are connected by oil-through hole A2, oil-through hole B3 and oil-through hole C8 with guiding valve ante-chamber 10, and C chambers 24 pass through oil-through hole D11 and guiding valve
Back cavity 12 is connected, and rotor 15 is rotatably set to inside stator 14 by pump shaft 25, and blade 16 is slidably disposed in and turns
In son 15；High pressure cargo tank 26, the high pressure cargo tank 26 are equipped with A chambers 27, and the side of A chambers 27 passes through oil-through hole E28 and damping hole 9
It is connected with guiding valve ante-chamber 10, the other side is connected by throttle orifice 19 with C chambers 24, and the side of high pressure cargo tank 26 is equipped with fuel-displaced
Hole 29.
Wherein, in the present embodiment, the safety valve complement includes guiding valve 7 and safety valve 32, and the side of guiding valve 7 is band
The cavity of opening, safety valve 32 are movably arranged in cavity, and the head end of safety valve 32 passes sequentially through steel ball 37,6 and of support nail
Safety valve spring 31 is flexibly connected with cavity, and the tail end of safety valve 32 is equipped with safety valve adjusting nut 39, wherein safe valve regulation
The diameter of nut 39 is more than the diameter of cavity, and pressure adjusting pad piece 40 is equipped between safety valve adjusting nut 39 and guiding valve 7.
Wherein, in the present embodiment, the stator 14 and 15 eccentric setting of rotor, and the side of stator 14 and variable ring
Stator resetting spring 33 is connected between 13.
Wherein, in the present embodiment, 16 quantity of the blade are 11.
Wherein, in the present embodiment, circular seal item 34 is equipped in the quad seal item 20, circular seal item 34 carries
For elastic force, so that quad seal item 20 and positioning pin 22 is realized 14 outer circle reliable contacts of stator and seal.
Wherein, in the present embodiment, the pressure value of the A chambers 27 is P1, and the pressure value of B chambers 23 is P1, the pressure of C chambers 24
Force value is P2, and the value of P1 and P2 differs.
The operation principle of the present invention：Fig. 5-6 is please referred to, when hydraulic steering pump works, with the rotation of rotor 15, leaf
The sliding in rotor 15 of piece 16.Due to stator 14 and 15 eccentric setting of rotor, there are one eccentricity between stator 14 and rotor 15,
The enclosed volume being made of the pump housing, oil distribution casing 4, stator 14, rotor 15 and blade 16 is set constantly to change.In 35 volume of oil suction area
Constantly increase and form vacuum, hydraulic oil is sucked in by the oil sucking window 17 on oil distribution casing 4, is constantly subtracted to 36 volume of laminated oil zone
Small (since the elasticity modulus of fluid is very big, can approximatively think that fluid is incompressible under normal circumstances) extra fluid is pressed
Go out.It is flowed in A chambers 27 by two annular pressure oil windows 18 on oil distribution casing 4, it is P1 to form pressure.The pressure oil of A chambers 27
For two parts：A part flows to guiding valve ante-chamber 10 through oil-through hole E28 and damping hole 9, and another part flows to C chambers by throttle orifice 19
24.The effect of damping hole 6 is to increase fluid flow resistance, reduces hydraulic shock, guiding valve 7 is made to move steadily.
When hydraulic steering pump rotating speed is relatively low, since 27 pressure P1 of A chambers is relatively low, guiding valve 7 remains stationary as, excessively oily at this time
Hole C8 is blocked by guiding valve 7.High pressure oil cannot be introduced into B chambers 23, and stator 14 remains stationary as, with the raising of rotating speed, 27 fluid of A chambers
Increase, while pressure P1 also increases, increase by the pressure difference at 19 both ends of throttle orifice,
That is △ P=P1-P2, as P1A1 >=P2A1+K1X1,
Wherein 23 pressure of P1-B chambers
24 pressure of P2-C chambers
The active area of A1-guiding valve 7
The rigidity of K1-guiding valve resetting spring 30
30 precompressed amount of X1-guiding valve resetting spring
The initial equilibrium conditions of guiding valve 7 are destroyed, and guiding valve 7 starts mobile to the back-end.With hydraulic steering pump rotating speed
It further increases, the amount of movement of guiding valve 7 increases, and when the front end face of guiding valve 7 is more than the edge of oil-through hole C8, high pressure oil is by oil
Hole C8 flows to B chambers 23, makes when P1 increases to
When P1A2 >=P2A2+K2X2,
33 precompressed amount of X2-stator resetting spring
Stator 14 starts to move to 24 direction of C chambers, and stator 14 and the eccentricity of rotor 15 reduce, hydraulic steering pump
Discharge capacity also reduces, and the fluid of output also reduces therewith.
When loading increase, the operating pressure of hydraulic steering pump also increases.Such as when beating direction to extreme position, turn
Fluid is no longer needed into Oil cylinder, the oil outlet 29 for being equivalent to hydraulic steering pump is closed.Hydraulic steering pump at this time
Pressure P2 increase.
As P2A3 >=K3X3
The projected area of steel ball 37 and 38 contact position of valve seat orifice wherein on A3-safety valve 32
31 rigidity of K3-safety valve spring
31 precompressed amount of X3-safety valve spring
Steel ball 37 is open, and fluid flows back to low pressure chamber by valve seat orifice 38, limits further increasing for oil liquid pressure, this
It is exactly the principle of " pressure limiting ".
Hydraulic steering pump uses internal feedback mode, is oil extraction pressure and flow by hydraulic steering pump itself
It pushes stator 14 to be rotated around positioning pin 22, makes stator, 1 changes with the eccentricity of rotor 15, to make hydraulic power-assisted steering
The discharge capacity and flow of pump reduce, therefore internal feedback hydraulic steering pump is simple in structure, at low cost.It simultaneously can be by load certainly
It is dynamic to adjust flow, can be according to automobile driving speed flow automatic regulation on automobile, flow is big when making low speed, turns to light；
Flow is small when high speed, and steering wheel is not unstable, and intact stability is good.It is followed inside hydraulic steering pump moreover, fluid can be reduced
Ring reduces fluid fever and energy expenditure, while can reduce engine power consumption, and good energy-conserving effect can be promoted the use of.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention, and any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (6)
1. a kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering, including rear cover and the pump housing, it is characterised in that：
The rear cover is equipped with oil inlet, oil-through hole A and oil-through hole B；
It is equipped in the pump housing
The front end of safety valve complement, the safety valve complement is the guiding valve ante-chamber equipped with oil-through hole C and damping hole, and safety valve is total
At rear end be the guiding valve back cavity equipped with oil-through hole D, and be connected between the rear end and the pump housing of safety valve complement guiding valve reset bullet
Spring；
Oil distribution casing, the oil distribution casing are equipped with variable ring, stator, rotor and several blades, and the surface of wherein oil distribution casing is equipped with
Oil sucking window, pressure oil window and throttle orifice, variable ring is interior to be equipped with the elongated slot with quad seal item, and variable ring is by positioning pin and determines
Son rotation connection, and the space between stator and variable ring is divided into B chambers and C chambers, wherein B chambers by quad seal item and positioning pin
It is connected with guiding valve ante-chamber by oil-through hole A, oil-through hole B and oil-through hole C, C chambers are connected by oil-through hole D with guiding valve back cavity,
Rotor is rotatably set to stator interior by pump shaft, and blade is slidably disposed in rotor；
High pressure cargo tank, the high pressure cargo tank are equipped with A chambers, and the side of A chambers is connected by oil-through hole E and damping hole with guiding valve ante-chamber
Logical, the other side is connected by throttle orifice with C chambers, and the side of high pressure cargo tank is equipped with oil outlet.
2. a kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering according to claim 1, it is characterised in that：It is described
Safety valve complement include guiding valve and safety valve, the side of guiding valve is the cavity that band is open, and safety valve is movably arranged in cavity
Interior, the head end of safety valve passes sequentially through steel ball, support nail and safety valve spring and is flexibly connected with cavity, and the tail end of safety valve is equipped with
Safety valve adjusting nut, the wherein diameter of safety valve adjusting nut are more than the diameter of cavity, and safety valve adjusting nut and guiding valve
Between be equipped with pressure adjusting pad piece.
3. a kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering according to claim 1, it is characterised in that：It is described
Stator and rotor eccentricity be arranged, and stator resetting spring is connected between the side of stator and variable ring.
4. a kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering according to claim 1, it is characterised in that：It is described
Blade quantity be 11.
5. a kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering according to claim 1, it is characterised in that：It is described
Quad seal item in be equipped with circular seal item.
6. a kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering according to claim 1, it is characterised in that：It is described
The pressure values of A chambers be P1, the pressure values of B chambers is P1, and the pressure value of C chambers is P2, and the value of P1 and P2 differs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820082811.4U CN207761941U (en) | 2018-01-18 | 2018-01-18 | A kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820082811.4U CN207761941U (en) | 2018-01-18 | 2018-01-18 | A kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207761941U true CN207761941U (en) | 2018-08-24 |
Family
ID=63180766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820082811.4U Withdrawn - After Issue CN207761941U (en) | 2018-01-18 | 2018-01-18 | A kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207761941U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108858042A (en) * | 2018-09-10 | 2018-11-23 | 江苏德尔森汽车有限公司 | A kind of hydraulic booster pump production components assembling equipment |
| CN110056505A (en) * | 2018-01-18 | 2019-07-26 | 江苏德尔森汽车有限公司 | A kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering |
-
2018
- 2018-01-18 CN CN201820082811.4U patent/CN207761941U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056505A (en) * | 2018-01-18 | 2019-07-26 | 江苏德尔森汽车有限公司 | A kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering |
| CN108858042A (en) * | 2018-09-10 | 2018-11-23 | 江苏德尔森汽车有限公司 | A kind of hydraulic booster pump production components assembling equipment |
| CN108858042B (en) * | 2018-09-10 | 2024-04-19 | 江苏德尔森汽车有限公司 | Spare part equipment is used in hydraulic pressure booster pump production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180824 Effective date of abandoning: 20220329 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180824 Effective date of abandoning: 20220329 |